diff --git a/assets/bootstrap.js b/assets/bootstrap.js
index 5c41e5e..c8354e5 100644
--- a/assets/bootstrap.js
+++ b/assets/bootstrap.js
@@ -1,6 +1,12 @@
 import { startStimulusApp } from 'vite-plugin-symfony/stimulus/helpers';
+import DropdownController from './controllers/dropdown_controller.js';
+import NotificationsController from './controllers/notifications_controller.js';
+import ImportModalController from './controllers/import_modal_controller.js';
 
 const app = startStimulusApp();
+app.register('dropdown', DropdownController);
+app.register('notifications', NotificationsController);
+app.register('import-modal', ImportModalController);
 
 // Register React components for {{ react_component() }} Twig function.
 // We register them manually because @symfony/ux-react's registerReactControllerComponents